Title: Chemical control of the southern chinch bug
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 Material Information
Title: Chemical control of the southern chinch bug
Physical Description: Book
Creator: Reinert, James Arnold,
Publisher: Agricultural Research Center, IFAS, University of Florida
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Bibliographic ID: UF00076426
Volume ID: VID00001
Source Institution: University of Florida
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Resource Identifier: oclc - 143312744

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Talle 1. Average number of chinch hugs per 1 ft.2 before and
at 5 weekly increments following insecticidal treat-
ments on l!ay 29, 1971


Insecticide


Orthene 75 iUP
Orthene 75 I'P
Bux 10G
Aspen 1. EC
Ethion 4EC
Brofene 10G
Dyfonate 10G
Dyfonate 10G
Untreated Check


Pro-
(Pounds)Treatnt.
AT/A Count


5
In
15
7.33
10
10
2
3
0


85.3
89.8
95.0
86.8
91.3
86.5
84.8
82.5
90.8


1

64.3
65.3
61.5
8.8
13.8
42.0
77.3
24.3
86.3


W e e k s


2 3 4 5


90.3
49.8
29.0
1.3
2.0
27.8
56,3
25.8
95.5


68.0
58.8
10,0
0.3
0.8
16.0
69.5
44.8
95,3


100.0
81.3
12.3
0.8
4.5
5.3
67.8
49.3
100.0


100.0
100.0
29.5
1.3
1.3
5.3
56.0
50.0
100.0


A CTA "ULTURAP L LIBRARY


AGRICULTURAL RESEARCHT C TEO, FORT LAUDERDALE, F

!imeo Report ARC-PL71-1 HUME LIBRARY


CHEMIICAL CONTROL OF THE SOUTHERN CHINCH B G J- I72

James A. Reinerti./
I.F.A.S. Univ. of Florida
The southern chinch bug is the most destructive pest f SL. ~tgUStn-

grass in Florida. This report is intended to provide information on chinch

bug control.

MATERIALS ATD METHODS

Treatments were applied to 100 ft2 plots of St. Augustinegrass heavily

infested with chinch bugs. Chinch bug population counts were taken before

treatments were applied and S weekly post-treatment counts were taken. Counts

were made by floating the bugs from 1 ft2 of turf for 8 minutes. A total of

19 insecticides applied at 29 rates were evaluated and each treatment was repli-

cated 4 times. Formulation and rate of application are given in Tables 1-3.

Granules were applied with a hand shaker and washed into the thatch with 6 gal.

of water per 100 ft2. Wettable powders, flowables, and emulsifiable concentrate:

were mixed with 2 gal. of water and applied with a sprinkler can. These mate-

rials were then washed into the thatch with 4 gal. of water per 100 ft2.


1/ Assistant professor (Ento'iolofy), AMriculturai .esearcT Center,
Fort Lauderdale, vloriia.


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RESULTS A'Mn DSCUrSIOS~

Chinch bug control tests were initiated in late May of 1971. An abnormally

dry season resulteA in very dense cinch buah nonulations throuti out the sumner,

Tests involving 19 insecticides are sumnarizeA in Tables 1-7. Those materials

which reduced the ponuiation helo,, 25-30 c"hinch burs ner nn0 Pt2 are considered

to provide excellent control. AHton, Aspon, laygon, diazinon, nursban, Pthion,

T-ithion, and VC-13 gave control up to 5 weeks, and are currently recommended by

the Florida Agriculture Extension Service, NTe'wer materials which pave at least

5 weeks control are T.rofene, Bux, Dyfonate 4 lbs., and PP1l1, Several oF the

materials evaluated will be tested again next season.

Table 2. Avera- nrf or of c'i4nc" Ene, er 1 ft t;eLore and! at 1 'eek?'
incre-entps ollowino insectici-nl treatment ow J.me 22, 1.71

Pre-
AI/A. Treattt. W e e k s
Insecticide (Lhs.) Count 1 2 3 4 5

Tr.thion 4EC' 10 83.0* 8.8 5.3 3.5 10,8 18.3
Tirpate 10G 4 100.0 76 8 93..0 99,8 0q.7 -
Tirpate 10G 6 98.0 04.0 84,0 64.5 05,7 -
Tirnate 10o 8 96,0 69.S 74,8 100,n 93. -
Tirpate 100 10 83.9 38.3 62.5 53.0 61, -
SN 316 10G 3 R1.3 67.5 62,0 60,5 R0.3 -
U 17004 50WP 5,5 85,0 42,8 5,.5 76.0 76,0 -
Mocan 10G 10 84.0 4.0 8,0 "33 23.5 60.0
PP 211 50EC P 82,3 1.8 0.3 1.0 1.0 35.8
PP 511 50FC 8 83.0 1.5 0.5 3.0 5,5 10.3
Furadan 4 5 85.5 5.3 16.n 21.5 34.3 56.5
Untreated Check 0 96.3 93.5 95,0 100 0 100.0 100.0
*Rach figure is the average of / replicates.

Table 3. Average number of chinch hugs per 1 ft2 before and at 5 weekly
increments following insecticidal treatment on August 4, 1971.
Pre -
AT/A. Treatnt. We e k s
Insecticides (Lhs.) Count 1 Z 3 4 5
Baygon 1.5EC 8 100* 16.8 5.3 12.8 13.3 30.0
Dyfonate 10G 4 100 7,5 0.5 0.8 0n. 3,0
nursban 2FC 1.5 100 4.,0 08 1 5 0.8 1.5
Akton 2EC 2 100 6.5 5.0 1I0 1.5 1.3
Piazinon 4EC 6 Inn n,,5 0.5 1.3 n.8 2.7
VC-13 75%EC 20 10n 16,3 7.5 0,5 1.8 2.0
Bux 4.2G 20 100 53.3 32.0 13.0 6.0 16.8
Tirpate lnG 20 100 12.8 6.0 9.8 28.8 40.3
Aspon 6E 8 Inn 1.3 0.5 0.8 O.' n.,
Untreated Check 0 100 100.0 100.0 100.0 0 100.0
*Each figure is the average of 4 replicates.


Paqe 2


,'imeoreport ARC-PL71-1




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